Re: Global variables are not restored with load()

[Stefan Neumann]

Hi Ben,

2010/6/5 Ben Abbott <address@hidden>

On Jun 5, 2010, at 10:52 AM, Stefan Neumann wrote:

I did a quick test of the developers sources and octave-3.2.3. For each, the global attribute was preserved. Perhaps an upgrade to a newer version will resolve the problem for you?

the problem happens only when octave is restarted.
If you just save/clear all/load then it works as you describe.
It seems that some infos on variables, like "global", survive even a clear all.

The global attribute is preserved by save(). It appears in the save-file like this:

# ------------------------------------------------- #
# Created by Octave 3.2.4, Sun Jun 06 00:41:11 2010 CEST <address@hidden>
# name: a
# type: global scalar
1
# ------------------------------------------------- #


But after restarting octave and load() it does not get restored, even though it definitely has been saved. Just to make sure I retried just now:

# ------------------------------------------------- #
octave:1> load a.dat
octave:2> who
Variables in the current scope:

ans

octave:3> a
error: `a' undefined near line 3 column 1
# ------------------------------------------------- #

See: no 'a'
I use octave 3.2.4. Upgrading to 3.3.51 might be premature.

Stefan

-----------------------------------
octave:2> clear all
octave:3> global a
octave:4> a = 1;
octave:5> b = 2;
octave:6> save test.mat
octave:7> clear all
octave:8> load test.mat
octave:9> whos
Variables in the current scope:

 Attr Name        Size                     Bytes  Class
 ==== ====        ====                     =====  =====
   g  a           1x1                          8  double
      b           1x1                          8  double

Total is 2 elements using 16 bytes
-----------------------------------

Ben